Cylinder head



Jan. .12, 1960 J, KAPlTULA 2,920,929

CYLINDER HEAD Filed Sept. 13, 1957 'any United States Patent O CYLINDERHEAD John Kapitula, Jersey City, NJ.

Application September 13, 1957, Serlal No. 683,799 1 claim. (cl. aos-'2)This invention relates to cylinder heads, and is preferably, but notnecessarily, used with one of the types of piston disclosed in mypending application, Serial No. 672,182, led luly 16, 1957 and entitledPistons.

An object of the invention is to increase the pressure and therefore thevelocity of a piston operating in a cylinder having a head constructedas herein shown, described and claimed, whereby a desired pressure isobtained with a smaller piston, thus diminishing the weight of theengine.

The drawings illustrate the invention, and in these:

Fig. l is a side elevation of a cylinder head in accordance with myinvention, and

Fig. 2 is a sectional view taken in line 2-2 of Fig. 1.

Referring to the drawings for a more detailed description thereof, thecylinder head shown is in two sections,

l 3 and 5, of which section 5 may be used alone or in combination withsection 3. Section 3, as shown, is threadedly connected to section 5, asindicated at 6. Section 3 has a cavity therethrough, in the form of adouble cone, with a throat 7 between the conical 4sections 8 and 9.Section has a funnel-shaped blind cavity comprising a conical section10, which is continuous with a constricted cylindrical section 11, thelatter terminating in point 12.

The motive medium, as steam, water, gas, enters section 8 and is therebyfunneled into the throat 7, and then into sections 9, 10 and 11 to thepoint 12. The motive medium is speeded in passing through the mentionedventuri section and builds up a pressure beyond it. There is thusproduced a reservoir of the motive medium at high pressure which, onescaping into the cylinder as the pressure in the latter is falling,puts a boosting pressure on the piston to increase its velocity. Whenthe cylinder head is used with the piston shown in the above identedapplication the desired etect is enhanced by obtaining what I call apoint-to-point or a line action of pressure.

It is to be understood that the motive medium, as steam or gas, underpressure, enters the cylinder between the pistons and the cylinder head,in the usual manner, and being under pressure, is forced into thedescribed cavity of the head.

Wha-t is claimed is:

A cylinder head having an internal, axially disposed cavity adapted toreceive a motive medium, the cavity comprising a venturi sectionextending rearwardly from its face and in the form of a pair of opposedforward and rearward cones with a throat between their apexes, and aconical section in base-to-base relation with the rearward cone of theventuri section.

References Cited in the le of this patent UNITED STATES PATENTS1,944,605l Lang Ian. 23, 1934 2,076,030 Kahllenberger Apr. 6, 19372,098,031! Essl Nov. 2, 1937 FOREIGN PATENTS 404,664 Germany Oct. 21,1924 854,600 Germany Nov. 6 1952

